Electric Car Power Windows Not Working: How to Fix or Repair?

Automation in the home and digitalization in automobiles have become immensely popular in recent years as they reduce human error and increase efficiency. The convenience of automation systems is unmatched and unmatched in home security, climate control, and automobiles. It is important to note that home automation relies heavily on several mechanical components. 

Modern vehicles almost always come with power windows. The system is standard in high-end vehicles and at least available as an option in mid-range vehicles. In contrast to traditional handles that take a lot of time and effort to operate, power windows are easy to use and require less effort to operate.

What is Car Power Window or Electric Window?

A power window is a window in a vehicle that can be opened and closed with the push of a button. In vehicles without power windows, the windows are operated by a crank handle. While opening or closing the window, power windows allow you to focus on the road.

By pressing a button or switch, power windows or electric windows can be raised and lowered in an automobile instead of using a crank handle. By pressing the power window button, the driver lowers the window. The window can be closed by lifting the button. The power window mechanism is driven by an electric motor. An electric motor is turned on when the driver presses the button, which raises or lowers the window.

History of Power Window Appearance

The engineers of the German company Brose invented the first mechanical window lifter in 1926. Patents were registered, but the device was first installed on cars two years later. Clients of this company included many car manufacturers. Car seats, doors, and bodies are still manufactured by the brand.

The first automatic power window version with an electric motor appeared in 1940. Packard 180 models were equipped with such a system. Electro hydraulics was the basis of the mechanism. There were some doors that could not be fitted with the system in the first development due to the oversized design. The Ford brand added the auto-lifting mechanism later on.

What are the Importance of Car Power Windows?

This road seems to have a tollbooth every mile or so, with traffic idling for half a mile before it comes to the token monster. One hand toggles the power window switch while the other finger holds a token. As planned, the token bounces back into your face when the window doesn’t move.

You jam on your brakes, crack the door, and throw your second token backhanded to the blaring horns behind you to avoid getting a toll evasion ticket. On a late-model vehicle, power windows are usually one of the most reliable systems. The process of diagnosing and repairing a problem is usually pretty straightforward.

Purpose of Power Window

The mechanism allows the driver or passenger of the car to independently adjust the door glass position. This task can be perfectly performed by the classical mechanical analog, so the electrical modification is meant to provide maximum convenience.

Some car models offer this element as an additional comfort option, while others include it as part of the basic package of features. Door card handles are equipped with a special button that controls the electric drive. The control is typically found in the tunnel between the front seats, but less commonly located in the center tunnel. 

The driver is responsible for controlling all the windows in the budget version. Several buttons are mounted on the door card handle, each responsible for controlling a specific window.

Features of Power Window

Automatic Up

There are a few limitations to this feature, including some complications. Automatic up and automatic down work in the same way. There is a risk associated with the automatic up feature. It is highly likely that if anything gets in the way of the window while it is going up, such as a child’s hand or a pet dog or cat’s paw, they will be injured.

Until the window hits the limit switch, it won’t stop, increasing the risk of an accident. This problem can only be solved by adding another circuit to the system that monitors the window rolling speed. A blockage slows down the speed of the motor, reversing the power back to it and lowering the window.

Automatic Down

Most power windows come with this feature. By tapping the button once, users can make the windows drop all the way down. To monitor how long the switch was held down, the system uses a circuit. The window drops all the way to the limit switch and stops there if the switch is held down for less than a second. As soon as the button is released, the circuit analyzes the time and stops rolling down the window.

Window Control From Outside

A key is inserted in the driver’s door, turned and held, and the windows can be lowered. A switch in the door lock controls this feature, which is controlled by the driver’s door module. A driver’s door module lowers the windows if the key is held for a set amount of time.

Courtesy Power On

Since power windows function only when the ignition is on, they are only functional during the ignition cycle of the vehicle. Nevertheless, some cars have courtesy power backups that continue to supply power to the window circuit even after the engine is turned off. You won’t have to turn your ignition on again just to roll up your windows if you forget to roll them up.

Parts of Car Power Window

Let us see the main parts of a car power window:

  • Reversible Electric Motor: Drives or modules equipped with reversible electric motors that execute the commands of the control unit.
  • Control Unit: Depending on wiring type, this unit processes electrical or electronic signals from the control module buttons and sends commands to the relevant door actuators.
  • Control Button: In most cases, the control buttons will be placed on the interior door handles, depending on the ergonomics of the cabin space.

Power Window Switches

Basic System

Powered doors are controlled through the front driver’s door and through the other doors.  All of them are fed by the same 20 Amp fuse. In most cases, a blown fuse isn’t the only problem.  It’s usually worn contacts or diodes that cause switch problems.

Simple design characterizes the switch.  You press the button and the window moves in the direction you want it to. Depending on the direction, the power goes up or down. Contacts become inoperable when carbon builds up on them.

Advanced System

These systems work differently than traditional power windows. In some cars, the electronic functions are centralized through a Body Controller. The switch does not supply power directly to the window motors. Rather, it is connected to one of the vehicle’s many modules. 

This is likely to be found in vehicles with a lot of controls. The power mirror controls, the power door locks, and even the power seat adjustments are some of the switches. Simply because one window doesn’t work, it makes the switch more expensive to replace. There is a good chance that the Driver’s Power Window is malfunctioning.

How Does Car Power Window Works? Mechanism

Switches and wires control power windows, which are powered by electricity or batteries. When the ignition is not turned on, the power windows will not work. There are no manual handles on power windows, unlike traditional windows. Manually operating them is not possible. Drivers can control the basic power windows, which usually have control over all four windows.

While modern cars use advanced power window systems, they are not particularly sophisticated. Most modern high-end and advanced cars are equipped with multiple powered features, such as power windows, power doors, and power Outside Rear View Mirrors. Getting all the wires together in one place is extremely difficult for manufacturers when faced with such a situation.

Thus, all the wires are integrated into one module, and all the controls are monitored. At the push of a button, all four windows receive power directly from the central wire module, since all the wires are merged into one.

  1. An optimized 20 ampere circuit breaker powers the driver’s side door.
  2. Through the window switch control panel, the power from the circuit-breaker is transmitted to a contact point in the center, where the wiring from all four windows meets.
  3. A power contact is then connected to the battery or electric motor and the ground of the vehicle.
  4. A switch disconnects one of the ends from the vehicle ground and connects it to the center power point. As a result, the power is distributed to the rest of the windows.

How Do We Check Car Power Windows Problems

There are several different types of power window mechanisms, but the most common is pretty basic. In most cases, the regulator mechanism is similar to the one used on garden variety hand cranked windows. Rack drives, sector drives, and cable drives are available. Once you remove the door panels, troubleshooting is straightforward but you may not need to remove any trim at all if your problem is terribly simple.

Power windows that break are a real pain, especially in hot or cold weather. In a few hours, you will be able to troubleshoot your power windows by following these steps.

Fuse Checking

The fuse is the first place to look if you are unable to move any of the windows. The fuse in window regulators is only large enough to allow all four windows to open simultaneously. An old fuse can be blown by a few sticky window channels and age. Don’t start the car after turning the key to Run.

Fused windows will not function: The motor won’t groan and the glass won’t move. You probably have some kind of mechanical problem if the fuse is good and you hear the motor or the glass seem to want to move.

Check the fuse if it does not work. Check the owner’s manual if the fuse box isn’t labeled to determine which fuse is to blame. For a few minutes, you might experience poor drive ability if you interrupt power to the engine management computer. If you pull fuses at random, your car radio might reset to the underwater alien rock-gospel station.

Check All Windows

Check the fuse first if all of the windows aren’t moving. Devices that operate at high currents are power windows. Fuse sizes for windows are only large enough to open all four windows simultaneously. A blown fuse can be caused by the age of the fuse and sticky window problems.

Lockout Switch Checking

It’s best to start any troubleshooting process by tackling the simplest possible issue, since both power window motors and switches can fail over time. A lockout switch is used for power windows.

The safety lockout switch is found on most vehicles with power windows. Located on or near the main switch panel, this switch is usually a toggle switch. Depending on the car, this panel may be located on the driver’s door or in the center console.

Since it is very easy to accidentally bump this lockout switch without noticing, you should check it as soon as your windows stop rolling up and down.  There is usually a crossed-out window icon on or near the switch, but it varies from car to car. Try using your windows again after pressing the lockout switch. You have solved your problem if they work.

Window Stickiness

All windows are sealed and gasket to prevent wind noise and rain from entering. The gaskets should be checked if the window isn’t opening or closing properly. The gasket can fail to function properly if it is misplaced or torn. If a gasket is torn or loose, it may be possible to repair it. In case the gasket is simply loose, you can get some adhesive at an auto parts store. Once the old adhesive has been removed with lacquer thinner, reinstall the gasket. If you don’t want the window to stick to the gasket, you should close the window overnight for it to dry.

A torn gasket may be repaired with super glue. With a single-edge razor blade, you can judiciously trim a loose corner of gasket. The gasket outside the glass is particularly important in this regard. The door’s internal drainage system cannot handle large quantities of rain or salt spray.

Car’s Electrical System Testing

The fuse is fine, but the window still won’t move. It’s possible that all the windows are dormant. Even if there is only one door, it is still possible to go spelunking inside. It might be something simpler you can troubleshoot under the dash if it’s all four.

In this case, you’ll need a schematic of your car’s electrical system and a voltage meter or 12v test light if you’ve narrowed down the fault to something other than a blown fuse. Now all that’s left is to follow the wiring from the fuse panel to the switch, then to the motor, testing along the way for 12 volts.

The voltage to the motor will be interrupted by a loose or corroded connector somewhere. It is also possible that the switch itself is defective. It is possible that the switch in the driver’s door or the wiring between the driver’s door and the right rear door is faulty if the switch in the driver’s door does not open the right rear door.

How to Proof Electrical Problem in Car Power Windows?

A jumper wire from the battery positive terminal can be connected directly to the positive side of the motor to make sure it’s an electrical issue.  It is important to keep in mind that some window regulator systems supply 12 volts continuously. The ground side of the circuit will also be switched. Your vehicle’s schematic should be checked.

In most vehicles, the rear windows can also be locked and deactivated. If the problem only affects the back windows, check to make sure this hasn’t been activated. Rarely, the motor may require replacement if there is a problem with it. In this case, tracing the wires will lead you right to the problem. The looseness of fasteners can also cause severe misalignment, which can cause gear-type regulators to jam.

How to Repair Car Power Window?

Remove Car Door Panel

It is probably necessary for you to gain access to the switch panel’s interior at this point. You can back probe the connectors on some vehicles by simply prying up the panel with your fingers. The panel may need to be removed on other vehicles.

A bewildering variety of fasteners hold door panels in place. Pull off the entire door handles and pulls. Plastic studs are commonly used to hold the perimeter of the panel. You should be able to reuse them if you pry them up carefully.

As soon as you have removed the door panel, carefully remove the weather sheeting. It will need to be replaced later, so you may need fresh contact cement.

Electrical System Fix

Try connecting a jumper wire directly from the battery positive terminal to the positive side of the motor to determine if it is electrical. There are some window regulator systems that supply 12v constantly and switch the ground side of the circuit. Take a look at the schematic.

The rear windows of most vehicles can also be locked or deactivated. In the case of balky rears only, check this switch. There are times when a duff motor is the real problem. It will need to be replaced. Alternatively, you can trace the wires until the problem is found. Gear-type regulators can be jammed by severe misalignment caused by loose fasteners.

Friction Reduction in Car Windows

The gasket and the window glass are in contact with each other. Any misalignment can significantly increase the friction, resulting in the motor not having enough torque to move the glass properly. Your window might just start working again if you lubricate the entire channel with silicone spray.

How to Remove Car Windows?

As the doors are opened, some high-end late-model cars automatically crank open their frameless windows. You may not even notice it because it happens so fast. Before the door latch clears, the window quickly opens, clearing the seal. Following the latching of the door latch, it then automatically closes.

Aside from the obvious advantages, this has two other advantages as well. As a result, a slightly open window vents interior air, which can make it difficult to open the door on tight-sealed cars. On top of that, the manufacturer can use a very different type of window seal. A small lip protrudes over the top of the glass, similar to the seal on a sedan door.

Frameless windows will not work with this type of seal because the glass has to clear it as it opens and closes. Water and noise are less likely to be absorbed by this type of seal. Logic control modules are required to achieve this, which is a downside. Factory shop manuals and expensive parts are likely to be needed to make repairs.

Safety Tips While Repairing Car Power Window

  • Do not touch the machinery with your fingers. An issue can be caused by a loose fastener or rivet, a broken bushing, or something else. It is possible for cables to become tangled or stuck on the drum. All friction points should be greased with white grease. You may need to re-glue, repair, or lubricate the window track gaskets below the top of the door.
  • Alternatively, the problem could be deeper inside the door. Then you will need to pull the door panel and poke around inside. 
  • Do not pull the fuse if you want to prevent your fingers from being amputated. Anchoring the glass while you work can be done with either a rubber wedge doorstop or duct tape.
  • The problem may be no more than a loose bolt moving the inner structure of the door, misaligning the window track. A door that has slotted holes for the attachment points of internal parts may allow you to adjust the misalignment by quarter inch when considering the misalignment carefully. 
  • A bad motor may be replaceable, or the whole mechanism may need to be replaced.
  • The weather stripping and door channels should be checked for torn, loose, or folded rubber parts, as well as foreign objects.
  • Last but not least, there may be a problem with the mechanism that operates the window. You’ll need to watch it moving up and down a few times, whether it’s a gear-and-sector lift, scissors lift, or cable-operated mechanism. 

Power Window Regulator Fixing or Repair Cost

A new window regulator generally costs $300 to $450, depending on the make and model of your vehicle. There are times when it may be a bit more expensive.

Although window regulators are generally designed to last for the lifetime of the car, there may be times when they fail unexpectedly. The windows that move the most frequently will usually need to be replaced first. Power windows on the driver’s side are often the first to need replacement.

Define Linear Accouters

Pull and push movements are provided by linear actuators through several processes. In addition to making it easier to open and close electric windows, these devices are also useful for hard-to-reach windows.

Workflow of Linear Accouters

By pressing a button on a device, electric windows can be operated remotely. Two inputs are required for these window components, an external input and an energy source. Both rotary and linear motion can be generated by these inputs. Power windows utilize two important mechanisms. 

Rack & Pinion

A rotational motion is converted into a linear motion by this mechanism. Pinned gears engage linear toothed racks, also known as circular gears. It is both the rack and pinion that rotates when the power is applied. It is converted into linear motion as a result of this rotary movement. When the rack gets pushed out with the pinion’s movement, the power window opens. External casings usually house the racks of power windows.


It is mounted on the track as an extendable pole. A casing surrounds both the track and rod for protection. After receiving electric power from the motor, the rod extends. When power windows are opened, this mechanism is in charge.

Importance of Linear Accouters in Power Windows

In home automation, linear actuators, especially in power windows, are vital components. The linear actuators are actuated by electric current, hence the name electric linear actuators. Actuators carry out several processes in order to provide motion to equipment, such as pushing, pulling, triggering, etc. One button is all it takes to open or close windows using these devices. There are many places where we can find power windows, including homes, cars, and offices. 

Benefits of Power Windows

Power windows are standard equipment on most vehicles today. People with arthritis or hand injuries can control their vehicles better and roll down their windows with less pain by using them. It is also possible to control the back windows from the master panel. Children cannot reach or roll down the windows in the back seat, so this is very helpful.

Merits of Power Windows


The power windows, as we mentioned, do not require you to use all your muscle to crank them up. They can be operated with buttons, switches, or levers instead. The driver and passengers with limited mobility will find it easier to control their windows this way. With just a touch of his finger, the driver can control the windows.


The master control pad is usually located on the console or the driver’s side door of most vehicles. The backseat windows can be locked if the kids are playing with them and goofing off. With a push of a button or switch of a lever, you can roll back up a back window if you find it rolled down midway through your trip. Your vehicle’s windows are completely controlled by you, so you can focus on getting where you’re going.

Additionally, the driver can control all six windows simultaneously using the master power panel in the front. If you have children in the back seat, this feature is very useful.

The windows can be controlled even while the driver is driving.


As manual windows require more time and effort to operate, drivers’ attention is diverted from the task at hand: driving safely. Instead of looking away for even a moment, the driver just pushes the power button to control the window, making the drive safer for the driver, his or her passengers, and everyone else. It makes it possible for people with hand injuries or other physical disabilities to operate the windows easily.

Demerits of Power Windows

Despite its many advantages, power windows may also have some drawbacks at times. A battery-powered device is always at risk of failure or breakdown since it is powered by electricity or batteries. The inability to open or close a power window could cause many problems. It is possible for power windows to suddenly stop working.

Let’s straighten everything out in a minute or so. Generally, if the door has been damaged in a crash, you are out of luck. Getting everything working properly may take a long time.

  1. Occasionally, the window regulator, also called the window track, will stop working. Power windows fail as a result of this.
  2. In addition to a broken motor, a broken cable pulley, or a broken switch, power windows can also stop working due to faulty components.
  3. Power window malfunctions can also be caused by worn out window regulators.

Wrapping it Up

Since power windows have so many advantages and so few disadvantages, it is quite obvious why most car manufacturers offer them as a standard feature. Pushing a button opens or closes the window of a car with power windows. The crank on a car window used to be used by drivers and passengers to open a window manually. Compared to crank windows, power windows offer a number of conveniences.

Almost all cars manufactured today have power windows. Power windows can malfunction and cause problems, too, like other car parts. It is possible for the power window to stop working if there is an electrical problem with the electric motor or the vehicle. Whenever you encounter any problem, it is recommended that you seek the assistance of a mechanic.

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